As NZS 1299-2009 Electrical Equipment for Mines and Quarries - Explosion-Protected Three-phase Restrained Plu

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     AS/NZS 1299:2009 Australian/New Zealand Standard ™   Electrical equipment for mines andquarries—Explosion-protected three-phase restrained plugs and receptaclesfor working voltages up to and including3.3 kV A S /  NZ  S 1 2  9  9 : 2  0  0  9     T   h   i  s   i  s  a   f  r  e  e   7  p  a  g  e  s  a  m  p   l  e .   A  c  c  e  s  s   t   h  e   f  u   l   l  v  e  r  s   i  o  n  a   t   h   t   t  p  :   /   /   i  n   f  o  s   t  o  r  e .  s  a   i  g   l  o   b  a   l .  c  o  m .    AS/NZS 1299:2009 This Joint Australian/New Zealand Standard was prepared by Joint TechnicalCommittee EL-023, Electrical Equipment in Mines and Quarries. It was approvedon behalf of the Council of Standards Australia on 26 November 2009 and on behalf of the Council of Standards New Zealand on 13 November 2009.This Standard was published on 9 December 2009.The following are represented on Committee EL-023:Australian Chamber of Commerce and IndustryAustralian Coal AssociationAustralian Industry GroupAviation and Marine Engineers Association, New ZealandDepartment of Mines and Energy, QldDepartment of Mines and Petroleum, WADepartment of Primary Industries, Mine Safety NSWElectrical Apparatus Service AssociationElectrical Regulatory Authorities CouncilMining Electrical and Mining Mechanical Engineering SocietyMinistry of Economic Development, New Zealand National Association of Testing Authorities Australia New Zealand Hazardous Areas Electrical Coordinating CommitteeSimtars (Department of Mines and Energy, Qld)Solid Energy, New ZealandUniversity of NewcastleWorkCover New South Wales Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology andsystems. To maintain their currency, all Standards are periodically reviewed, andnew editions are published. Between editions, amendments may be issued.Standards may also be withdrawn. It is important that readers assure themselvesthey are using a current Standard, which should include any amendments whichmay have been published since the Standard was purchased.Detailed information about joint Australian/New Zealand Standards can be found byvisiting the Standards Web Shop at or Standards New Zealand web site at and looking up the relevant Standard inthe on-line catalogue.For more frequent listings or notification of revisions, amendments andwithdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact theirrespective national Standards organization.We also welcome suggestions for improvement in our Standards, and especiallyencourage readers to notify us immediately of any apparent inaccuracies orambiguities. Please address your comments to the Chief Executive of eitherStandards Australia or Standards New Zealand at the address shown on the backcover. This Standard was issued in draft form for comment as DR 09020.    T   h   i  s   i  s  a   f  r  e  e   7  p  a  g  e  s  a  m  p   l  e .   A  c  c  e  s  s   t   h  e   f  u   l   l  v  e  r  s   i  o  n  a   t   h   t   t  p  :   /   /   i  n   f  o  s   t  o  r  e .  s  a   i  g   l  o   b  a   l .  c  o  m .     AS/NZS 1299:2009 Australian/New Zealand Standard ™   Electrical equipment for mines andquarries—Explosion-protected three-phase restrained plugs and receptaclesfor working voltages up to and including3.3 kV COPYRIGHT © Standards Australia/Standards New Zealand All rights are reserved. No part of this work may be reproduced or copied in any form or byany means, electronic or mechanical, including photocopying, without the writtenpermission of the publisher.Jointly published by Standards Australia, GPO Box 476,Sydney, NSW 2001 and StandardsNew Zealand, Private Bag 2439, Wellington 6140ISBN 0 7337 9329 0Originated as AS 1299—1989.Previous edition 1993.Jointly revised and designated as AS/NZS 1299:2009.    T   h   i  s   i  s  a   f  r  e  e   7  p  a  g  e  s  a  m  p   l  e .   A  c  c  e  s  s   t   h  e   f  u   l   l  v  e  r  s   i  o  n  a   t   h   t   t  p  :   /   /   i  n   f  o  s   t  o  r  e .  s  a   i  g   l  o   b  a   l .  c  o  m .   AS/NZS 1299:2009 2 PREFACE This Standard was prepared by the Joint Standards Australia/Standards New ZealandCommittee EL-023, Electrical Equipment in Mines and Quarries, to supersedeAS 1299—1993,  Electrical equipment for coal mines—Flameproof restrained plugs and receptacles .The objective of this Standard is to provide requirements and guidance for explosion-protected three-phase restrained plugs and receptacles to manufacturers, users, regulatoryauthorities and associated interests and for use with other related Australian/New ZealandStandards and relevant mining regulations. It also is to allow for the use of existingcompatible cable coupling systems and for the introduction of new non-compatible cablecoupling systems.This Standard differs from the previous edition in the following significant ways:(a) Recognizes the AS/NZS 60079 series of Standards.(b) Introduces provisions for alternative designs. Plugs and receptacles that aredimensionally compatible with this Standard are called Type A. Alternative designsare called Type B.(c) Updated figures showing critical compatibility dimensions and flamepaths ensurecompatibility between different makes of Type A components.(d) Provides for transition devices between Type A and Type B components.(e) Increased emphasis on integrity of earth paths.(f) Clarifies test criteria.(g) Allows for higher current ratings.(h) Defines maximum voltage for restrained systems at 3.3 kV.(i) Removes reference to coal mines and includes mines and quarries.(j) Withdrawal of AS 1147.1,  Electrical equipment for coal mines—Insulating materials, Part 1: Materials for insulating power conducting components and incorporation of test requirements into Appendix B of this Standard. Materials tested by authorities toStandards listed in Appendix B may be accepted without verification.(k) Outlines additional marking requirements in Clause 1.6.(l) Illustrates the quick-release concept in Figure 1.1.(m) Introduces the term ‘explosion-protected’ throughout the Standard.(n) Allows for non-metallic materials to be used in the construction of the components(refer to Clause 2.3).(o) Details requirements of earthing through the plugs and receptacles.(p) Allows for pins and socket earths in Type B designs (as opposed to scraping earth inType A).(q) Defines the plug removal sequence (refer to Clause 2.11.2).(r) Increases earth size in cable reel receptacles from 6 mm 2 to 16 mm 2 .(s) Increases phase barrier earth connection to at least 6 mm 2 .(t) Provides template drawings to allow manufacturers of explosion-protected enclosuresto design outlets that do not compromise the integrity of receptacles.    T   h   i  s   i  s  a   f  r  e  e   7  p  a  g  e  s  a  m  p   l  e .   A  c  c  e  s  s   t   h  e   f  u   l   l  v  e  r  s   i  o  n  a   t   h   t   t  p  :   /   /   i  n   f  o  s   t  o  r  e .  s  a   i  g   l  o   b  a   l .  c  o  m .
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